秦政,常俊晓,高挺,陈音璇
QIN Zheng,CHANG Junxiao,GAO Ting,CHEN Yinxuan

• 1:国网浙江省电力有限公司台州供电公司

摘要(Abstract)：

鉴于传统的配电系统潮流计算方法不再适用于微电网,提出了一种新颖的前推回代法用于求解无平衡节点的孤岛微电网潮流。该方法设置了内外双层迭代策略,在内层采用传统的前推回代法,在外层采用频率和电压联合修正,很好地解决了孤岛微电网频率偏移问题。最后通过含5个DG(分布式电源)的IEEE 33节点孤岛微电网算例仿真,结果表明,与BFGS信赖域方法相比,本文所提MBFS(改进前推回代)方法不仅具有计算准确、易于实现的优点,还能适应不同增益的下垂控制场景,为微电网的分析与规划提供了有力工具。
The traditional power flow calculation method for the distribution system is no longer applicable to the microgrid. Therefore, the paper proposes a novel backward/forward method to solve the power flow for islanded microgrid without balance nodes. The inner and outer iterations strategy is adopted in the method. The inner iteration uses traditional backward/forward sweep method and outer iteration uses the joint correction of frequency and voltage to solve the islanded microgrid frequency offset. Finally, simulation results with the IEEE 33 node with five DGs(distributed generation) show that: compared with the BFGS trust region method,the proposed method is not only accurate and easy to realize but suitable for different gain droop control scenarios, which provides a powerful tool for the analysis and planning of microgrid.

关键词(KeyWords)： 下垂控制;孤岛微电网;潮流计算;内外双层迭代;前推回代
droop control;islanded microgrid;power flow;inner/outer double iterations;backward/forward sweep

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211JH16000G)

作者(Author): 秦政,常俊晓,高挺,陈音璇
QIN Zheng,CHANG Junxiao,GAO Ting,CHEN Yinxuan

DOI: 10.19585/j.zjdl.201902005

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